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Virtualization

ID	Contact Title	Contact Name	Country	Rating


1	Accounting Manager	Hanna Moos	USA	1 2 3 4 5
2	Marketing Assistant	Paul Henriot	Argentina	1 2 3 4 5
3	Sales Representative	Antonio Moreno	France	1 2 3 4 5
4	Owner	Antonio Moreno	Austria	1 2 3 4 5
5	Sales Manager	Antonio Moreno	Argentina	1 2 3 4 5
6	Owner	Pascale Cartrain	Austria	1 2 3 4 5
7	Sales Agent	Paul Henriot	England	1 2 3 4 5
8	Accountant	Antonio Moreno	USA	1 2 3 4 5
9	Accountant	Patricio Simpson	France	1 2 3 4 5
10	Sales Associate	Antonio Moreno	Germany	1 2 3 4 5
11	Marketing Assistant	Patricio Simpson	USA	1 2 3 4 5
12	Sales Consultant	Antonio Moreno	Brazil	1 2 3 4 5
13	Sales Agent	Elizabeth Lincoln	Italy	1 2 3 4 5
14	Sales Agent	Matti Karttunen	Argentina	1 2 3 4 5
15	Marketing Manager	Jaime Yorres	Bulgaria	1 2 3 4 5
16	Accounting Manager	Elizabeth Lincoln	England	1 2 3 4 5
17	Marketing Assistant	Matti Karttunen	Austria	1 2 3 4 5
18	Accounting Manager	Matti Karttunen	Brazil	1 2 3 4 5
19	Owner	Elizabeth Lincoln	Argentina	1 2 3 4 5
20	Sales Representative	Howard Snyder	Germany	1 2 3 4 5
21	Owner	Matti Karttunen	Germany	1 2 3 4 5
22	Accountant	Patricio Simpson	Austria	1 2 3 4 5
23	Sales Associate	Jaime Yorres	Italy	1 2 3 4 5
24	Marketing Assistant	Hanna Moos	France	1 2 3 4 5
25	Accountant	Patricio Simpson	Austria	1 2 3 4 5
26	Sales Representative	Paul Henriot	Italy	1 2 3 4 5
27	Sales Associate	Paul Henriot	USA	1 2 3 4 5
28	Accountant	Pascale Cartrain	Bulgaria	1 2 3 4 5
29	Sales Representative	Patricio Simpson	Germany	1 2 3 4 5
30	Marketing Assistant	Matti Karttunen	Argentina	1 2 3 4 5
31	Marketing Manager	Hanna Moos	USA	1 2 3 4 5
32	Owner	Elizabeth Lincoln	Brazil	1 2 3 4 5
33	Sales Agent	Matti Karttunen	USA	1 2 3 4 5
34	Sales Representative	Hanna Moos	England	1 2 3 4 5
35	Sales Manager	Paul Henriot	Austria	1 2 3 4 5
36	Marketing Manager	Elizabeth Lincoln	Spain	1 2 3 4 5
37	Sales Agent	Jaime Yorres	Brazil	1 2 3 4 5
38	Sales Consultant	Howard Snyder	Brazil	1 2 3 4 5
39	Sales Representative	Patricio Simpson	England	1 2 3 4 5
40	Accountant	Howard Snyder	Brazil	1 2 3 4 5
41	Sales Agent	Matti Karttunen	France	1 2 3 4 5
42	Accountant	Elizabeth Lincoln	Italy	1 2 3 4 5
43	Sales Agent	Elizabeth Lincoln	England	1 2 3 4 5
44	Sales Manager	Howard Snyder	Bulgaria	1 2 3 4 5
45	Sales Representative	Hanna Moos	Austria	1 2 3 4 5
46	Sales Associate	Jaime Yorres	Bulgaria	1 2 3 4 5
47	Sales Agent	Pascale Cartrain	Italy	1 2 3 4 5
48	Accounting Manager	Elizabeth Lincoln	England	1 2 3 4 5
49	Sales Associate	Matti Karttunen	Austria	1 2 3 4 5
50	Sales Associate	Antonio Moreno	Bulgaria	1 2 3 4 5
51	Sales Associate	Georg Pipps	Italy	1 2 3 4 5
52	Accountant	Elizabeth Lincoln	Italy	1 2 3 4 5
53	Accountant	Pascale Cartrain	Austria	1 2 3 4 5
54	Sales Agent	Patricio Simpson	Argentina	1 2 3 4 5
55	Sales Manager	Hanna Moos	Spain	1 2 3 4 5
56	Sales Associate	Hanna Moos	France	1 2 3 4 5
57	Owner	Hanna Moos	Argentina	1 2 3 4 5
58	Accounting Manager	Pascale Cartrain	England	1 2 3 4 5
59	Sales Agent	Elizabeth Lincoln	Argentina	1 2 3 4 5
60	Marketing Assistant	Hanna Moos	Bulgaria	1 2 3 4 5
61	Marketing Assistant	Howard Snyder	Austria	1 2 3 4 5
62	Marketing Manager	Antonio Moreno	Bulgaria	1 2 3 4 5
63	Marketing Assistant	Antonio Moreno	Bulgaria	1 2 3 4 5
64	Accountant	Howard Snyder	Germany	1 2 3 4 5
65	Accounting Manager	Hanna Moos	Italy	1 2 3 4 5
66	Accounting Manager	Hanna Moos	Argentina	1 2 3 4 5
67	Marketing Manager	Elizabeth Lincoln	France	1 2 3 4 5
68	Sales Agent	Jaime Yorres	Spain	1 2 3 4 5
69	Sales Consultant	Elizabeth Lincoln	England	1 2 3 4 5
70	Marketing Assistant	Howard Snyder	Italy	1 2 3 4 5
71	Sales Associate	Paul Henriot	Italy	1 2 3 4 5
72	Sales Associate	Jaime Yorres	Argentina	1 2 3 4 5
73	Sales Associate	Hanna Moos	Bulgaria	1 2 3 4 5
74	Accounting Manager	Howard Snyder	England	1 2 3 4 5
75	Sales Associate	Patricio Simpson	England	1 2 3 4 5
76	Marketing Assistant	Jaime Yorres	USA	1 2 3 4 5
77	Marketing Assistant	Pascale Cartrain	Austria	1 2 3 4 5
78	Sales Agent	Jaime Yorres	Brazil	1 2 3 4 5
79	Sales Manager	Patricio Simpson	England	1 2 3 4 5
80	Sales Agent	Paul Henriot	Argentina	1 2 3 4 5
81	Sales Agent	Pascale Cartrain	Germany	1 2 3 4 5
82	Sales Consultant	Howard Snyder	USA	1 2 3 4 5
83	Sales Representative	Pascale Cartrain	Germany	1 2 3 4 5
84	Marketing Manager	Patricio Simpson	England	1 2 3 4 5
85	Sales Consultant	Pascale Cartrain	Brazil	1 2 3 4 5
86	Accounting Manager	Jaime Yorres	Bulgaria	1 2 3 4 5
87	Accounting Manager	Antonio Moreno	Spain	1 2 3 4 5
88	Sales Representative	Paul Henriot	Italy	1 2 3 4 5
89	Sales Consultant	Antonio Moreno	USA	1 2 3 4 5
90	Owner	Georg Pipps	France	1 2 3 4 5
91	Owner	Jaime Yorres	France	1 2 3 4 5
92	Marketing Manager	Patricio Simpson	Italy	1 2 3 4 5
93	Sales Representative	Antonio Moreno	Austria	1 2 3 4 5
94	Owner	Jaime Yorres	Bulgaria	1 2 3 4 5
95	Sales Consultant	Antonio Moreno	Brazil	1 2 3 4 5
96	Sales Manager	Hanna Moos	Germany	1 2 3 4 5
97	Accountant	Georg Pipps	Germany	1 2 3 4 5
98	Sales Representative	Hanna Moos	Austria	1 2 3 4 5
99	Sales Associate	Georg Pipps	France	1 2 3 4 5
100	Marketing Manager	Antonio Moreno	Italy	1 2 3 4 5


...91 92 93 94 95 96 97 98 99 100 ... Item 95001 to 96000 of 300000 Page: of 300 GoPage size:

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Columns
- ID
- Contact Title
- Contact Name
- Country
- Rating

About this demo
C#
VB
Download demo code files
Isolate this demo as a stand-alone application

RadGrid's virtualization feature allows you to handle hundreds of thousands of rows without negatively impacting the user experience. The control achieves this thanks to its ItemsPerView property allowing you to control the number of items loaded at a time. Users can now scroll, as well as show, hide, resize and reorder columns without any waiting time.

This demo shows how quickly Telerik's ASP.NET DataGrid can handle user interactions with 300,000 items. You can configure the component to allow scrolling through the entire data set or only through the current page by using EnableCurrentPageScrollOnly property,.

<%@ Page Language="vb" AutoEventWireup="false" CodeFile="DefaultVB.aspx.vb" Inherits="Telerik.GridExamplesVBNET.Performance.Virtualization.DefaultVB" %>

<%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>
<%@ Register TagPrefix="qsf" Namespace="Telerik.QuickStart" %>
<!DOCTYPE html>
<html xmlns='http://www.w3.org/1999/xhtml'>
<head runat="server">
    <title>Telerik ASP.NET Example</title>
    <link href="styles.css" rel="stylesheet" />
</head>
<body>
    <form id="form1" runat="server">
    <telerik:RadScriptManager runat="server" ID="RadScriptManager1" />
    <telerik:RadSkinManager ID="RadSkinManager1" runat="server" ShowChooser="true" />
    <telerik:RadAjaxLoadingPanel runat="server" ID="RadAjaxLoadingPanel1"></telerik:RadAjaxLoadingPanel>
    <telerik:RadAjaxPanel runat="server" ID="RadAjaxPanel" LoadingPanelID="RadAjaxLoadingPanel1" CssClass="demo-container">
        <telerik:RadGrid RenderMode="Lightweight" ID="RadGrid1" runat="server"  AutoGenerateColumns="false"
            AllowSorting="true" GroupingEnabled="false"
            EnableHeaderContextMenu="true" AllowPaging="true" PageSize="1000" OnNeedDataSource="RadGrid1_NeedDataSource">
            <MasterTableView TableLayout="Fixed">
                <Columns>
                    <telerik:GridBoundColumn UniqueName="ID" HeaderText="ID" HeaderStyle-Width="50px" DataField="ID"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactTitle" HeaderText="Contact Title" HeaderStyle-Width="150px" DataField="ContactTitle"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactName" HeaderText="Contact Name" HeaderStyle-Width="150" DataField="ContactName"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="Country" HeaderText="Country" HeaderStyle-Width="100px" DataField="Country"></telerik:GridBoundColumn>
                    <telerik:GridRatingColumn UniqueName="Rating" HeaderText="Rating" HeaderStyle-Width="100px" DataField="Rating"></telerik:GridRatingColumn>
                </Columns>
            </MasterTableView>
            <ClientSettings ReorderColumnsOnClient="true" AllowColumnsReorder="true" ColumnsReorderMethod="Reorder">
                <Virtualization EnableVirtualization="true" InitiallyCachedItemsCount="2000"
                    LoadingPanelID="RadAjaxLoadingPanel1" ItemsPerView="100"/>
                <Scrolling AllowScroll="true" UseStaticHeaders="true" ScrollHeight="500px" />
                <Resizing AllowColumnResize="true" />
            </ClientSettings>
            <PagerStyle Mode="NextPrevNumericAndAdvanced"></PagerStyle>
        </telerik:RadGrid>
    </telerik:RadAjaxPanel>
    </form>
</body>
</html>

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